Question 377712
{{{drawing(300,300,-4,10,-13,1,grid(1),
circle(4,-4,0.3),
circle(7,-9,0.3),
circle(-1,-7,0.3),
line(7,-9,4,-4),
line(4,-4,-1,-7),
graph(300,300,-4,10,-13,1,0))}}}
Using the pattern of the two left most points, go to the right most point, drop down {{{3}}} units and move left {{{5}}} units. 
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({{{7}}},{{{-9}}})+({{{-5}}},{{{-3}}})=({{{highlight(2)}}},{{{highlight(-12)}}})
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{{{drawing(300,300,-4,10,-13,1,grid(1),
circle(4,-4,0.3),
circle(7,-9,0.3),
circle(-1,-7,0.3),
blue(circle(2,-12,0.3)),
blue(circle(2,-12,0.2)),
blue(circle(2,-12,0.25)),
blue(circle(2,-12,0.1)),
blue(circle(2,-12,0.15)),
blue(circle(2,-12,0.05)),
line(7,-9,4,-4),
line(4,-4,-1,-7),
line(-1,-7,2,-12),
line(2,-12,7,-9),
graph(300,300,-4,10,-13,1,0))}}}